Army Force Reinforced 32:1 Full Tune-Up Kit for M4 Airsoft AEG Rifle

Army Force Reinforced 32:1 Full Tune-Up Kit for M4 Airsoft AEG Rifle Steel Construction 32:1 Ratio Tune-Up Kit Include Spring, Air Nozzle, Spring Guide, Piston Head, Gear Set, Cylinder & Cylinder Head Increased Durability, Efficiency, and Reliability CNC Airsoft Gears is stronger and lasts longer than standard AEG Gears Suitable For Tokyo Marui M4 Series Electric AEG Rifle Airsoft Guns